Differential mechanism shell with high stability

Abstract

The high-stability differential shell comprises a shell body, a first shaft hole is fixedly connected to the top end of the shell body, a mounting cavity is formed in the middle of the first shaft hole, a threaded groove is formed in the surface of the first shaft hole, and balls are arranged in the mounting cavity. The half shaft is installed in the first shaft hole, the half shaft slides in the first shaft hole, so that the ball is extruded and slides in the installation cavity, the first spring is extruded and contracted, the annular limiting groove in the half shaft is clamped with the ball after the half shaft moves by a certain distance, and therefore the position of the half shaft is fixed, and the adjusting rod is inserted into the installation cavity. When the differential works, the threaded holes and the threaded grooves in the fixing plate are aligned, the fixing plate is installed on the first shaft hole through the fixing bolts, and therefore the balls are fixed in the limiting grooves and can rotate in the annular limiting grooves when the differential works, and rotating operation of the gear is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of differential housings, in particular to a differential housing with strong stability. Background Art

[0002] The automobile differential is a mechanism that enables the left and right (or front and rear) drive wheels to rotate at different speeds. It is mainly composed of left and right half-shaft gears, two planetary gears and a gear rack. Its function is to make the left and right wheels roll at different speeds when the car is turning or driving on uneven roads, that is, to ensure that the drive wheels on both sides perform pure rolling motion.

[0003] After the half-shaft gear is installed in the differential housing through the half-shaft, due to the long size of the half-shaft and to ensure the operation of the gear, there is a certain gap between the shaft hole and the half-shaft. When the differential is working, the half-shaft is likely to collide with the shaft hole when it rotates, thereby affecting the overall stability of the differential housing. Utility Model Content

[0004] The purpose of the present utility model is to provide a differential housing with strong stability, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a differential housing with strong stability, comprising an outer shell body, a first axial hole fixedly connected to the top of the outer shell body, an installation cavity provided in the middle of the first axial hole, a threaded groove provided on the surface of the first axial hole, a ball roller provided inside the installation cavity, a first spring provided on the side of the ball roller close to the threaded groove, an adjusting rod slidably connected inside the first spring, a fixing plate fixedly connected to the end of the adjusting rod away from the ball roller, and a fixing bolt threadedly connected to the middle of the fixing plate.

[0006] Preferably, there are two mounting cavities, the number of the balls corresponds to the number of the mounting cavities, the fixing plate adopts an arc structure, a threaded hole is opened in the middle of the fixing plate, the fixing bolt passes through the threaded hole and is threadedly connected to the thread groove.

[0007] Preferably, a flange is fixedly connected to the side of the shell body away from the first axial hole, a mounting hole is opened in the middle of the flange, a reinforcing rib is fixedly connected to the side of the flange away from the shell body, and a second axial hole is fixedly connected to the side of the flange close to the reinforcing rib.

[0008] Preferably, there are multiple mounting holes, which are evenly distributed circumferentially; there are multiple reinforcing ribs, which adopt a triangular structure; and the reinforcing ribs are fixedly connected to the second shaft hole.

[0009] Preferably, a cavity is provided inside the shell body, a cross shaft groove is provided on the inner wall of the cavity, and an oil hole is provided on the inner wall of the shell body.

[0010] Preferably, the inner wall of the oil hole is fixedly connected to a connecting plate, the side of the connecting plate close to the second axial hole is fixedly connected to a spring rod, the side of the spring rod away from the connecting plate is fixedly connected to a sealing rubber plate, the surface of the spring rod is movably sleeved with a second spring, and an oil leakage hole is opened in the middle of the connecting plate.

[0011] Preferably, there are two connecting plates, the number of the sealing rubber plates corresponds to the number of the connecting plates, the sealing rubber plates are in contact with the inner wall of the oil hole, the size of the sealing rubber plates is smaller than the size of the oil hole, and there are multiple oil leakage holes. Beneficial effects

[0012] (1) The utility model installs the half shaft inside the first shaft hole, and the half shaft slides in the first shaft hole, so that the ball is squeezed and slides in the installation cavity, and the first spring is squeezed and contracted. After moving a certain distance, the annular limit groove on the half shaft engages with the ball, thereby fixing its position. The adjusting rod is inserted into the interior of the installation cavity, so that the threaded hole and the threaded groove on the fixing plate are aligned, and the fixing plate is installed on the first shaft hole with a fixing bolt, thereby fixing the ball in the limit groove. At the same time, when the differential is working, the ball can rotate in the annular limit groove without affecting the rotation of the gear.

[0013] (2) The utility model provides a method in which the lubricating oil splashes into the oil hole as the reducer gear rotates when the car is running, and the sealing rubber plate moves under the action of pressure, and the spring rod and the second spring are squeezed and contracted, so that the lubricating oil can enter the interior of the differential housing through the gap between the sealing rubber plate and the oil hole, thereby lubricating the internal structure. The elastic force of the spring rod and the second spring can make the sealing rubber plate seal the oil hole, and prevent the lubricating oil from flowing out quickly after entering. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the bottom-up structure of the present invention;

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 4 For the utility model Figure 3 A schematic diagram of the structure at center A;

[0018] Figure 5This is a schematic diagram of the installation cavity and thread groove structure of the utility model.

[0019] In the figure: 1. Housing body; 2. First axial hole; 3. Mounting cavity; 4. Threaded groove; 5. Ball; 6. First spring; 7. Adjusting rod; 8. Fixing plate; 9. Fixing bolt; 10. Flange; 11. Mounting hole; 12. Reinforcing rib; 13. Second axial hole; 14. Cavity; 15. Cross shaft groove; 16. Oil hole; 17. Connecting plate; 18. Spring rod; 19. Sealing rubber plate; 20. Second spring; 21. Oil leakage hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] The utility model provides a technical solution: Figure 1-5 As shown, in this embodiment, a differential housing with strong stability includes a shell body 1, the top of the shell body 1 is fixedly connected to a first shaft hole 2, the middle of the first shaft hole 2 is provided with a mounting cavity 3, the surface of the first shaft hole 2 is provided with a threaded groove 4, a ball 5 is provided inside the mounting cavity 3, a first spring 6 is provided on the side of the ball 5 close to the threaded groove 4, an adjusting rod 7 is slidably connected inside the first spring 6, and the end of the adjusting rod 7 away from the ball 5 is fixedly connected to a fixing plate 8, and the middle of the fixing plate 8 is threadedly connected to a fixing bolt 9.

[0022] By installing the half-shaft inside the first shaft hole 2, the half-shaft slides in the first shaft hole 2, so that the ball 5 is squeezed and slides in the installation cavity 3, and the first spring 6 is squeezed and contracted. After moving a certain distance, the annular limit groove on the half-shaft engages with the ball 5, thereby fixing its position. The adjusting rod 7 is inserted into the interior of the installation cavity 3, so that the threaded hole and the threaded groove 4 on the fixing plate 8 are aligned, and the fixing plate 8 is installed on the first shaft hole 2 with the fixing bolt 9, thereby fixing the ball 5 in the limit groove. At the same time, when the differential is working, the ball 5 can rotate in the annular limit groove without affecting the rotation of the gear.

[0023] There are two mounting cavities 3 , and the number of balls 5 corresponds to the number of mounting cavities 3 . The fixing plate 8 adopts an arc-shaped structure, and a threaded hole is opened in the middle of the fixing plate 8 . The fixing bolt 9 passes through the threaded hole and is threadedly connected to the thread groove 4 .

[0024] A flange 10 is fixedly connected to the side of the shell body 1 away from the first axial hole 2, a mounting hole 11 is opened in the middle of the flange 10, a reinforcing rib 12 is fixedly connected to the side of the flange 10 away from the shell body 1, and a second axial hole 13 is fixedly connected to the side of the flange 10 close to the reinforcing rib 12.

[0025] There are multiple mounting holes 11 , which are evenly distributed circumferentially. There are multiple reinforcing ribs 12 , which adopt a triangular structure. The reinforcing ribs 12 are fixedly connected to the second shaft hole 13 .

[0026] A cavity 14 is defined inside the housing body 1 , a cross shaft groove 15 is defined on the inner wall of the cavity 14 , and an oil hole 16 is defined on the inner wall of the housing body 1 .

[0027] A connecting plate 17 is fixedly connected to the inner wall of the oil hole 16, a spring rod 18 is fixedly connected to the side of the connecting plate 17 close to the second axial hole 13, a sealing rubber plate 19 is fixedly connected to the side of the spring rod 18 away from the connecting plate 17, a second spring 20 is movably sleeved on the surface of the spring rod 18, and an oil leakage hole 21 is opened in the middle of the connecting plate 17.

[0028] When the car is running, the lubricating oil will splash into the oil hole 16 as the reducer gear rotates. Under the action of pressure, the sealing rubber plate 19 will move, and the spring rod 18 and the second spring 20 will be squeezed and contracted, so that the lubricating oil can enter the interior of the differential housing through the gap between the sealing rubber plate 19 and the oil hole 16, thereby lubricating the internal structure. The elastic force of the spring rod 18 and the second spring 20 can make the sealing rubber plate 19 seal the oil hole 16 to prevent the lubricating oil from flowing out quickly after entering.

[0029] There are two connecting plates 17 , and the number of sealing plates 19 corresponds to that of connecting plates 17 . The sealing plates 19 are in contact with the inner wall of the oil hole 16 . The size of the sealing plates 19 is smaller than that of the oil hole 16 . There are multiple oil leakage holes 21 .

[0030] The utility model provides a differential housing with strong stability, and the specific working principle is as follows:

[0031] When in use, install the cross shaft in the cross shaft groove 15, install the half shaft in the first shaft hole 2, and slide the half shaft in the first shaft hole 2, so that the ball 5 is squeezed and slides in the installation cavity 3. The first spring 6 is squeezed and contracted. After moving a certain distance, the annular limit groove on the half shaft engages with the ball 5, thereby fixing its position to ensure stability during operation. Insert the adjusting rod 7 into the interior of the installation cavity 3, align the threaded hole and the threaded groove 4 on the fixing plate 8, and use the fixing bolt 9 to install the fixing plate 8 on the first shaft hole 2, so that The ball 5 is fixed in the limiting groove. When the car is running, the lubricating oil will splash into the oil hole 16 as the reducer gear rotates. Under the action of pressure, the sealing rubber plate 19 moves, and the spring rod 18 and the second spring 20 are squeezed and contracted, so that the lubricating oil can enter the interior of the differential housing through the gap between the sealing rubber plate 19 and the oil hole 16, thereby lubricating the internal structure. The elastic force of the spring rod 18 and the second spring 20 can make the sealing rubber plate 19 seal the oil hole 16 to prevent the lubricating oil from flowing out quickly after entering.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A differential housing with high stability, comprising a housing body (1), characterized in that: The top end of the housing body (1) is fixedly connected to a first axial hole (2), a mounting cavity (3) is provided in the middle of the first axial hole (2), a threaded groove (4) is provided on the surface of the first axial hole (2), a ball (5) is provided inside the mounting cavity (3), a first spring (6) is provided on the side of the ball (5) close to the threaded groove (4), an adjusting rod (7) is slidably connected inside the first spring (6), an end of the adjusting rod (7) away from the ball (5) is fixedly connected to a fixing plate (8), and a fixing bolt (9) is threadedly connected to the middle of the fixing plate (8).

2. A differential case with high stability according to claim 1, characterized in that: The number of the mounting cavities (3) is two, and the number of the balls (5) corresponds to the number of the mounting cavities (3). The fixing plate (8) has an arc-shaped structure, and a threaded hole is provided in the middle of the fixing plate (8). The fixing bolt (9) passes through the threaded hole and is threadedly connected to the thread groove (4).

3. The differential case with high stability according to claim 1, characterized in that: A flange (10) is fixedly connected to the side of the shell body (1) away from the first axial hole (2), a mounting hole (11) is provided in the middle of the flange (10), a reinforcing rib (12) is fixedly connected to the side of the flange (10) away from the shell body (1), and a second axial hole (13) is fixedly connected to the side of the flange (10) close to the reinforcing rib (12).

4. A differential case with high stability according to claim 3, characterized in that: There are a plurality of mounting holes (11) provided, and the plurality of mounting holes (11) are evenly distributed in the circumferential direction; there are a plurality of reinforcing ribs (12) provided, and the plurality of reinforcing ribs (12) adopt a triangular structure; the reinforcing ribs (12) are fixedly connected to the second shaft hole (13).

5. The differential case with high stability according to claim 1, characterized in that: A cavity (14) is provided inside the shell body (1), a cross shaft groove (15) is provided on the inner wall of the cavity (14), and an oil hole (16) is provided on the inner wall of the shell body (1).

6. The differential case with high stability according to claim 5, characterized in that: The inner wall of the oil hole (16) is fixedly connected to a connecting plate (17), a side of the connecting plate (17) close to the second shaft hole (13) is fixedly connected to a spring rod (18), a side of the spring rod (18) away from the connecting plate (17) is fixedly connected to a sealing rubber plate (19), a second spring (20) is movably sleeved on the surface of the spring rod (18), and an oil leakage hole (21) is opened in the middle of the connecting plate (17).

7. The differential case with high stability according to claim 6, characterized in that: The number of the connecting plates (17) is two, the number of the sealing rubber plates (19) corresponds to the number of the connecting plates (17), the sealing rubber plates (19) are in contact with the inner wall of the oil through hole (16), the size of the sealing rubber plates (19) is smaller than the size of the oil through hole (16), and the number of the oil leakage holes (21) is multiple.

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